Mail transport protection

The following operating systems have Mail transport protection available in Advanced settings > Server > Integration. Antivirus action on the transport layer can be set under Actions to take if cleaning not possible:

No action - retain infected messages that cannot be cleaned

Quarantine message - send infected messages to the quarantine mailbox

Reject message - reject an infected message

Drop message silently - deletes messages without sending NDR (Non-Delivery Report)

Antispam action on transport layer can be set under Action to take on spam messages:

No action - keep the message even if it is marked as spam

Quarantine message - send messages marked as spam to the quarantine mailbox

Reject message - reject messages marked as spam

Drop message silently - delete messages without sending NDR (Non-Delivery Report)

mail_trans_protection

SMTP Reject Response - you can specify a Response code, Status code and Response message which define the SMTP temporary denial response sent to the SMTP server if a message is refused. You can enter a response message in the following format:

Response code

Status code

Response message

250

2.5.0

Requested mail action okay, completed

451

4.5.1

Requested action aborted:local error in processing

550

5.5.0

Requested action not taken:mailbox unavailable

554

5.6.0

Invalid content

note_icon_note NOTE

You can also use system variables when configuring SMTP Reject Responses.

Write scan results to message headers - when enabled, a scan results are written into message headers. These message headers start with X_ESET making them easy to recognize (for example X_EsetResult or X_ESET_Antispam).

Add notification to the body of scanned messages offers three options:

Do not append to messages

Append to infected messages only

Append to all scanned messages (doesn't apply to internal messages)

Add note to the subject of infected messages - when enabled, ESET Mail Security will append a notification tag to the email subject with the value defined in the Template added to the subject of infected messages text field (predefined default text is [found threat %VIRUSNAME%]). This modification can be used to automate filtering of infected messages by filtering emails with a specific subject, for example using rules or alternatively on a client side (if supported by the email client) to put such email messages into a separate folder.

Add note to the subject of spam messages -  when enabled, ESET Mail Security will append a notification tag to the email subject with the value defined in the Template added to the subject of spam messages text field (predefined default text it [SPAM]). This modification can be used to automate spam filtering by filtering emails with a specific subject, for example using rules or alternatively on a client side (if supported by the email client) to put such email messages into a separate folder.

note_icon_note NOTE

You can also use system variables when editing text which will be added to the subject.